A four-wheel pure electric drive electric vehicle including a final drive and a differential

Abstract

The invention discloses a four-wheel pure electric drive electric car comprising main reducers and differential mechanisms. A front axle and a rear axle are designed by independent suspensions and are each divided into four drive half axles; the differential mechanisms are arranged inside the front axle and the rear axle; the drive half axles to which gears on the two sides of each differential mechanism belong are connected with the corresponding drive half axles close to hubs through flange plates; the front axle and the rear axle are each provided with two adjacent disc type motors which are connected in series through a flange plate or a coupler; an output shaft of each disc type motor is connected with a driving gear of the corresponding reducer through a flange plate; and the two sides of each reducer are each provided with two disc type motor controllers fixed to a car chassis. By designing the novel entire car structure, the two disc type motors of each axle are connected in series through the flange plate or the coupler, the output shaft of each motor is directly connected with the driving gear of the corresponding main reducer through the flange plate, and accordingly the torque and power doubling effect is achieved.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a four-wheel pure electric drive electric vehicle comprising a final reducer and a differential. Background technique [0002] The driving power applied in the field of pure electric and hybrid vehicles mostly adopts the combination of traditional motor + conventional stepped parallel shaft reducer, and the driving motor is mostly AC permanent magnet synchronous motor, DC motor or AC asynchronous motor with radial flux. The traditional radial flux motor has a large axial installation size, low power density and low efficiency, which is not conducive to the application in the field of electric vehicles with strict space requirements and high efficiency requirements. The reducer mostly adopts parallel shaft multi-stage reducer, which causes too much space occupied in the radial direction and affects the space for battery arrangement. Contents of the invention [0003] In order to overcome ...

AI Technical Summary

Problems solved by technology

[0002] The driving power applied in the field of pure electric and hybrid vehicles mostly adopts the combination of traditional motor + conventional stepped parallel shaft reducer, and the driving motor is mostly AC permanent magnet synchronous motor, DC motor or AC asynchronous motor with radial flux. The traditional radial flux motor has a large axial installation size, low power density and low efficiency, which is not conducive to the application in the field of electric vehicles with strict space requirements and high efficiency requirements

The reducer mostly adopts parallel shaft multi-stage reducer, which causes too much space occupied in the radial direction and affects the space for battery arrangement

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